Around 10 years ago I changed from a prussik to VT hitch climber set up after a previous 10 or so years on just a prussik , had tried the VT and all the fancy hitches before at shows and dismissed them as fancy stuff for benders , decided one day that on Monday I would stick with the VT and pulley for a week and it was the best decision I've made in my career for speeding up and making it more efficient to saving wear on my body from thrusting arm over arm and not like you do on a prussik , it helped I was climbing the first tree with another climber who had mastered the VT as it gave me some confidence...
Since then I've looked at new techniques and kit different.. Or tried too ie like pulley savers are a god send once you have got used to having no friction!! SRT is a strange one but even for access on big trees it's worth getting a pantin and bodging up a home made haas if you don't feel confident working off a single line, for me it took one climb to get used to a VT and about 1 week for SRT.
Had to do arial rescue refresher on a prussik the other day and thought I would show the newbies how to body thrust , got to the branch all right although a bit out of breath but the prussik binder and slipped it's really an awful knot and frustrating when you see people struggling with it... It's a shame that there are so many good experienced tree climbers out there who if they just took the chance on changing there game plan and having a serious look at even a hitch climber set up would realise how much an edge shiney stuff can give you but you need to give it more than a rec climb.. Pretty sure that won't change any ones opinions as I know how stubborn vet tree climbers can be.. I still doubt I'll never climb on any thing other than a hitch though.